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发明名称
PNEUMATIC ROTARY-CHURN DRILLING MACHINE
摘要
申请公布号
SU819326(A1)
申请公布日期
1981.04.07
申请号
SU19792752416
申请日期
1979.03.19
申请人
INST GORNOGO DELA SIBIRSKOGO OTDEL AN SSSR
发明人
KLUSHIN NIKOLAJ A,SU;ABRAMENKOV EDUARD A,SU;YUREV LEONID A,SU
分类号
E21B6/00;B25D9/00;B25D16/00;E21C37/22;(IPC1-7):E21C3/24;E21C1/08
主分类号
E21B6/00
代理机构
代理人
主权项
地址
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